Ingram gets franchise tag

The Chargers have placed the nonexclusive franchise tag on their top free agent, edge-rushing linebacker Melvin Ingram, the club announced Monday.

Ingram, provided he signs the tender, will make north of $15 million next year — money that’ll be fully guaranteed. He and the Chargers can work on a longterm deal until July 15.

Ingram, the team’s firstround pick in 2012, developed into one of the NFL’s top passrushers, picking up 18.5 sacks and eight forced fumbles over the last two seasons.

Ingram, 27, is expected to move to defensive end this season opposite defensive rookie of the year Joey Bosa. The team is shifting from a 3-4 defensive scheme to a 4-3, though the staff has insisted the changes will be minimal.

Ingram had been viewed as one of the top defensive free agents on the market this summer. By making moves to keep Ingram, the Chargers have stayed within their personnel preference to draft, develop and then re-sign their own players.

It’s the first time the Chargers have used the franchise tag since they designated Vincent Jackson in 2011.

By choosing to use the “nonexclusive” tag, the Chargers give themselves a massive safety net if Ingram decides he’d like to play somewhere else.

Until he signs the tag offer, the sixth-year South Carolina product is free to negotiate with other NFL teams. If he agrees to terms elsewhere, the Chargers have the right to match. If they decided the price was too high, the Chargers could let Ingram walk at the cost of a pair of first-round picks from whatever team he signed with.

The steep asking price makes it very likely Ingram is lining up opposite of Bosa on the defensive line next season when the team plays its inaugural season in Los Angeles.

Ingram’s one of the top edge rushers on the market (NFL.com ranks him as the No. 9 overall free agent and Pro Football Focus ranks him No. 4). Over the last two seasons, he’s tied for the 12th-most sacks.

daniel.woike@latimes.com Twitter: @DanWoikeSports